Toy water gun



FIG. 1 is a front perspective view of a toy water gun showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a further front perspective thereof;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a toy water gun, substantially as shown. 